Part A done, you will find the answers below.
<u>Hope this helps!</u>
Answer:b) The air at high altitudes are less dense, so its harder to breathe.
Explanation:
AS altitude increases, the air pressure drops. This reduces the amount of gas molecules in the air so the air becomes less dense compared to air closer to sea level.
The correct answer is option C, that is, both vitamin C and zinc are involved in immune system functions.
Vitamin C is an important vitamin, which does an essential function in wound healing, immunity, and eye health. On the other hand, zinc refers to a dietary mineral, which also helps in immunity, protects the eyes from vision-robbing ailments, and also helps to heal wounds.
Formed by temperature and pressure changes inside the earth
The transitive property of equality is what I believe it is. A = B and B = C therefore A = C